Cordless wireless telephone set and telephone system and wireless conference telephone system using the same

Abstract

The present invention provides a wireless walkie-talkie, which includes a walkie-talkie antenna, a walkie-talkie sending / receiving module, a microprocessor, a wireless sending / receiving module and a wireless antenna; the wireless walkie-talkie also includes a communication circuit connected with the microprocessor, an input module, a display module, a generating circuit for incoming calls promotion and a communication device connected with the communication circuit. The invention also provides a telephone system and a wireless conference telephone system with the use of this wireless walkie-talkie. The wireless walkie-talkie is applicable to families which have difficulties to use cables or to certain families and enterprises used as fixed telephones, especially to the communication between buildings, the wireless walkie-talkie can perform functions of multi-use for one telephone, multi-side communication, mutual communication with priority to a desk telephone and realization of wireless communication.

Description

【Technical field】 [0001] The invention relates to a telephone set, in particular to a cordless wireless telephone set, a telephone system and a wireless conference telephone system using the same. 【Background technique】 [0002] The GSM digital mobile communication system was designed by a standardization committee composed of major European telecommunication operators and manufacturers. It is developed on the basis of the cellular system. Including several frequency bands such as GSM900MHz, GSM1800MHz and GSM1900MHz. The GSM system has several important features: good anti-theft capability, large network capacity, rich number resources, clear calls, strong stability, less susceptible to interference, sensitive information, less call dead spots, low power consumption of mobile phones, etc. GSM has absolute advantages, but there are still some shortcomings, that is, it cannot be used for multiple purposes, multi-party calls, and the intercom function based on landlines canno...

AI Technical Summary

Problems solved by technology

But the shortcoming of the digital cordless phone is also obvious, that is, it cannot be separated from the landline. Although it can achieve a certain distance of cordless transmission, it is far from being able to achieve the real global communication of the GSM digital mobile communication system and the CDMA digital mobile communication system.

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